Brush



. Aug. 30, 1938. E. D. HORNE 2,128,822

' BRUSH Filed Oct. 11, 1937 .ZZward 3 15 07726 INVENTOR WITNESS PatentedAug. 30, 1938 UNITED STATES PATENT OFFEQE 1 Claim.

The invention relates to a brush and more especially to a cylinderbrush.

The primary object of the invention is the provision of a brush of thischaracter, wherein the interior surface of a pipe or other cylindricalpiece of work can be readily cleaned so that the soldering of fittingstherewith can be successfully carried forth particularly when sweatsoldering one to the other.

Another object of the invention is the provision of a brush of thischaracter, wherein the same is self-adjusting for effecting the internalcleaning of a cylindrical body, pipe or the like and is usable withplumbers for soldering operations, the brush being susceptible offitting within diiferent cross sectional sizes of cylinders, pipes orthe like.

A further object of the invention is the provision of a brush of thischaracter, which is simple in its construction, thoroughly reliable andeffective in operation, easy of application, strong, durable, andinexpensive to manufacture.

With these and other objects in view, the invention consists in thefeatures of construction, combination and arrangement of parts as willbe hereinafter more fully described, illustrated in the accompanyingdrawing, which discloses the preferred embodiment of the invention andpointed out in the claim hereunto appended.

In the accompanying drawing:

Figure 1 is a side elevation of a brush constructed in accordance withthe invention.

Figure 2 is a sectional view on the line 2-2 of Figure 1 looking in thedirection of the arrows.

Figure 3 is an enlarged sectional view taken on the line 3-3 of Figure 2looking in the direction of the arrows.

Similar reference characters indicate corresponding parts throughout theseveral views in the drawing.

Referring to the drawing in detail, A designates generally the brushconstituting the present invention and in this instance comprises acylindrical stock constituting a barrel 5 of the required length open atopposite ends and having in diametrically opposite sides near one openend elongated longitudinally disposed slots 6 through which project andin which operate a pair of lever-like links I which turn on a pivot 8common thereto and carried in the bifurcated end 9 of a plunger l0adapted for rotation in any desirable manner.

The links 1 exteriorly of the barrel 5 have swingingly connected theretoelongated outwardly arched brush heads H, the links 1 being pivoted atl2 to the said heads ll intermediate of their length and these heads arefitted with brush bristles [3.

Surrounding the plunger H1 is a coiled spring l4, active in compression,one end being seated against a washer l5 loose upon the plunger Ill andadapted for contact with the barrel 5 at its end next thereto while theother end of the spring is seated against a cross pin l6 fitted in theplunger Ill. The spring M in compression holds the heads ll close to andin contact With the barrel 5 at diametrically opposite sides thereof andby moving the plunger l0 relative to the barrel 5 in one direction theheads I I through the action of the links 1 are moved outwardly andtheir pivotal connection with the links enables self-adjustment of theseheads in conformity with the interior wall formation of a cylinder, pipeor the like, a portion of a pipe being denoted at H. Now by rotation ofthe plunger from any suitable source of power, the bristles l3 will actupon the inner wall of the pipe I! for the thorough cleaning thereof sothat the sweat soldering of this pipe with a fitting can beaccomplished.

Built exteriorly on the barrel 5 at diametrically opposite sides thereofare laterally extending stop wings l8 which are step shouldered at H!and the purpose of these wings is to limit the insertion of the brush ina piece of Work of varying diameters as is illustrated in Figure 2 ofthe drawing.

The brush hereinbefore described is designed to clean the fittings usedin the plumbing. trade for connecting water piping and makes suchfittings ready for service in sweat soldering of joints in such pipingor the like.

The outermost end of the barrel 5 has fitted therein a picking prong 2|]usable for cleaning purposes.

What is claimed is:

A brush of the kind described comprising a barrel, shaft means movablyfitting in the barrel, a plurality of bristled or brush heads positionedabout the circumference of the barrel, a toggle, each link of which ispivoted to a head at one end and pivotally connected at the other end tosaid shaft means, the said barrel having apertures for receiving thelinkage and providing an abutment therefor, resilient means associatedwith the barrel and shaft means to normally hold the brush heads againstthe barrel, and a plurality of radially spaced stop wings carried by thebarrel, said stop wings having symmetrically stepped shoulders, onegroup of which abut against the end of a pipe being cleaned wherebyaxial movement of the said shaft means with respect to said stop wingsmay spread the brush heads into operative engagement with said pipe.

EDWARD D. HORNE.

